Use appd_bt_add_error() to report business transaction errors. If you set this function parameter, markBTAsError the transaction is reported as an error transaction when the error occurs. For the function {{appd_bt_add_error,}}, the Controller database truncates log messages that exceed 5,000 characters.

The SDK provides an enum to classify the error level as APPD_LEVEL_NOTICE, APPD_LEVEL_WARNING, or APPD_LEVEL_ERROR.